Acquisition Pro Forma Information, Acquisitions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 02, 2022	Jan. 02, 2022	Jan. 03, 2021
Business Acquisition [Line Items]
Restaurant sales	$ 1,663,860		$ 1,571,457
Net income	$ (41,796)		$ (27,621)
Basic and diluted net income (loss) per share	$ (0.84)		$ (0.54)
2019 Acquisitions [Member]
Business Acquisition [Line Items]
Restaurant sales		$ 1,568,533
Net income		$ (25,586)
Basic and diluted net income (loss) per share		$ (0.59)